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| Reference Number | NIA2_NGET0053 | |
| Title | Optimise Fault Infeed | |
| Status | Started | |
| Energy Categories | Other Power and Storage Technologies (Electricity transmission and distribution) 100%; | |
| Research Types | Applied Research and Development 100% | |
| Science and Technology Fields | ENGINEERING AND TECHNOLOGY (Electrical and Electronic Engineering) 100% | |
| UKERC Cross Cutting Characterisation | Not Cross-cutting 100% | |
| Principal Investigator |
Project Contact No email address given National Grid Electricity Transmission |
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| Award Type | Network Innovation Allowance | |
| Funding Source | Ofgem | |
| Start Date | 01 March 2024 | |
| End Date | 30 September 2025 | |
| Duration | ENA months | |
| Total Grant Value | £360,000 | |
| Industrial Sectors | Power | |
| Region | London | |
| Programme | Network Innovation Allowance | |
| Investigators | Principal Investigator | Project Contact , National Grid Electricity Transmission (100.000%) |
| Industrial Collaborator | Project Contact , National Grid Electricity Transmission (0.000%) |
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| Web Site | https://smarter.energynetworks.org/projects/NIA2_NGET0053 |
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| Objectives | The project aims to develop an innovative method which introduces an element of controllability to cumulative fault infeed to manage maximum fault levels in the future network and reduce the need for reinforcement. This project will first review worldwide code requirements, experience and best practice on fault level management with high penetration of renewable generation and interconnectors. This includes understanding codes and practices on fault infeed of PPMs, and methodologies for maximum short circuit current assessment around the world.The project will then investigate the minimum fault infeed required to ensure the security of the system (i.e. to avoid system instability, protection mal-operation, and any other unintended consequences). Next, the project will focus on developing a novel fault level control method that can be applied in the GB network via close engagement with stakeholders. The developed methods will be tested and validated and the impacts on the system will be assessed. Finally, the project will identify any future works required to enable implementation. It is believed that the project developed solution can effectively reduce the cumulative fault level in the future network and thus significantly reduce the number of the sites requiring to be upgraded with higher fault level capability or running split. The key benefits calculated are based on savings in reduced reinforcement and constraint costs and the estimated cost benefit of this project is significant and could reach around £1378m if the project is successful and the innovation method can be rolled out across GB.WP1: Survey of worldwide code requirements, industry experience and best practice· Survey of relevant worldwide electricity utilities code requirements on fault level management with high penetration of renewable generation and interconnectors.· Survey of industry experience and best practice on managing cumulative fault level issues from PPM generation, and review of their impacts on stakeholders (including consumers, developers, and network owners and operators, etc), connection time, cost, system operability and security.· Identification of any technical, regulatory issues/barriers.WP2: Development of innovative fault level control method· Investigation of the minimum fault infeed requirement to ensure the security of system (i.e. to avoid system instability, protection mal-operation, and any other unintended consequences)· Development of an innovative fault level control method that can be applied in the GB network via close engagement with key stakeholders and recommendation of the best solution.WP3: Validation of the proposed solution via system study · Implementing the proposed solution on the GB network model and conducting system fault level studies to assess if the proposed solution resolves the problem.· Understanding of the corresponding system impacts e.g. voltage dips, protection operation, system stability and EMT via detailed simulation studies.· Identification of any issues associated with the developed solution and further refinement as necessary. WP4: Implementation plan· Identification of future works required for implementation, estimation of the associated implementation cost and assessment of cost-benefit analysis from the consumer perspective.· Production of an implementation plan.· Production of the final project report and dissemination of key learnings and outcomes of the project via a workshop and publications. The objective of the project includes the following:· Understand relevant worldwide code requirements and industry practice in relation to PPM fault level management with high penetration of renewable generation.· Develop a novel fault level control method that is non-asset-based and non-topology based (i.e. does not rely on substation asset replacement and/or split running of substations).Identify key work required to implement the developed method and quantify its benefits. | |
| Abstract | The TRW (Transmission Reinforcement Work) study shows that over the next ten years, a significant area of the transmission network will exceed the existing 63kA maximum fault current capability if the PPM (Power Parked Module)-based wind and solar generation and batteries feeds a minimum fault infeed of 1pu into a fault. Many sites might have to be rebuilt with 80kA fault level capability or run split. The project aims to develop an innovative method which control cumulative fault infeed in order to manage maximum fault levels in the future network and reduce the need for reinforcement. | |
| Data | No related datasets |
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| Projects | No related projects |
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| Publications | No related publications |
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| Added to Database | 02/10/24 | |
